Curious I should stumble across this very subject. My wife was getting very friendly with a Chinese guy at our church. We used to jog with him and his wife. Every chance he and my wife got they would run way ahead of us. One time when I caught up to them he was pulling his silk running shorts way toward his chest and the outline of his cock was very obvious. He is over six feet tall and his dick more than fits his body size. It's pretty big. My wife was facing him and I was behind her and I'm sure she saw the whole thing as well.
It wasn't long after that he made a pass at my wife and supposedly freaked himself out and backed off. He said he was having issues in his marriage and wanted to fix things at home.
I'm not so sure that is the truth for a couple of reasons. One is I know my wife well enough to know she has no problem going after a man she finds attractive and she did find him attractive. Two is every Thursday she is gone all day while I'm at work and last Thursday she "accidentally" left a pair of very sexy lace thong panties soaking in the bathroom sink. They're not the kind a woman wears for everyday running around. They're the kind a woman wears when she wants to stir up a man's desire. It may not be him, but I'm certain she has met someone she is interested in. I've been there before with her and I more than recognize the signs.
Funny thing about my wife is she won't willing cuckold me, but she absolutely has no problem cheating on me.